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Participant demographics
| Characteristic | Experimental group (n = 9) | Control group (n = 9) |
|---|---|---|
| Gender (male) | 5 (55%) | 5 (55%) |
| Race | ||
| White | 9 (100%) | 7 (78%) |
| Other | 0 (0%) | 2 (22%) |
| Age | ||
| 30–40 years old | 0 (0%) | 2 (22%) |
| 40–50 years old | 4 (44%) | 2 (22%) |
| 50–60 years old | 2 (22%) | 4 (44%) |
| 60–70 years old | 0 (0%) | 1 (11%) |
| > 70 years old | 3 (33%) | 0 (0%) |
